
Testing and repairing disk permissions
User permissions associated with files, folders, or applications can become damaged and prevent a file or application from opening. Permissions problems can also cause your computer to run slowly.
Using Disk Utility, you may be able to fix these permissions problems.
You can only verify or repair permissions on a disk with Mac OS X installed.
- In Disk Utility, select the disk in the list.
- Click First Aid.
- Click Verify Disk Permissions to test permissions or Repair Disk Permissions to test and repair permissions.
Repairing permissions may also be recommended after updating the system or installing new software.
You can also repair permissions for Mac OS 9 if you are having problems with using applications in the Classic environment. Select the disk and choose File > Fix OS 9 Permissions.